6564942 has 32 divisors (see below), whose sum is σ = 14835360. Its totient is φ = 2151360.

The previous prime is 6564919. The next prime is 6564967. The reversal of 6564942 is 2494656.

6564942 is a `hidden beast` number, since 6 + 5 + 649 + 4 + 2 = 666.

It is a d-powerful number, because it can be written as 6⁵ + 5⁷ + 6⁸ + 4³ + 9⁷ + 4⁷ + 2³ .

It is a junction number, because it is equal to n+sod(n) for n = 6564897 and 6564906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2298 + ... + 4290.

It is an arithmetic number, because the mean of its divisors is an integer number (463605).

Almost surely, 2^6564942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6564942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7417680).

6564942 is an abundant number, since it is smaller than the sum of its proper divisors (8270418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6564942 is a wasteful number, since it uses less digits than its factorization.

6564942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065 (or 2059 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 6564942 is about 2562.2142767536. The cubic root of 6564942 is about 187.2450294372.

The spelling of 6564942 in words is "six million, five hundred sixty-four thousand, nine hundred forty-two".